<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <script src="../js/vue.js"></script>
    </head>
    <body>
        <div id="app">
            <parent></parent>
        </div>
        <template id="child">
            <div>
                <button @click="click">Send</button>
                <input type="text" v-model="message">
            </div>
        </template>
        <script>
            Vue.component('parent',{
                template : '<div><child  @childFn="transContent"></child>'
                    +'子组件传来的值：{{message}}  </div>',
                data(){
                    return{message:''}
                },
                methods : {
                transContent(payload){
                        this.message = payload;
                    }
                }
            });
            Vue.component('child',{
                template:'#child',
                data(){return{message:'子组件的消息'}},
                methods:{
                    click(){
                        this.$emit('childFn',this.message);
                    }
                }
            })
             var vm = new Vue({
                 el:'#app'
             });
        </script>
    </body>
</html>